Fluid control valve

Abstract

A fluid control valve comprises a valve body (1), a valve core (2), a cover plate (3) and a rocker arm (4). The valve core (2) is connected with the rocker arm (4) and positioned in the valve body (1), the cover plate (3) covers the valve core (2), and the rocker arm (4) is driven by external force to drive the valve core (2) to rotate so as to control flow passage connection and disconnection. Control of fluid connection and disconnection and two flow directions can be realized according to requirements by the fluid control valve. The fluid control valve has advantages of small size, low airflow loss, realization of noncontact seal, applicability to high-temperature fluid and the like, different flow rate requirements can be met conveniently through structural size parameter modificationaccording to different flow area demands, and accordingly design as required can be realized.

Description

Technical field [0001] The invention belongs to the field of fluid control and relates to a fluid control valve. Background technique [0002] On the hot-end components of the aero-engine, the high-temperature secondary flow is flow controlled to realize the on-off and direction control of the secondary flow path, which requires the use of high-temperature gas control valves. The existing domestic valves mainly include cut-gate, gate, swing, spherical, butterfly, slide valve, roof and pipe clamp types in structure. The above-mentioned valves are more used in civil and industrial fields. , Such as water valve, oil valve, low-temperature air valve, etc., the existing valve has a large pressure loss when the fluid flows through the control element. In the control, manual switch control is used or the switch is driven by a motor. The manual control cannot meet the requirements of the engine. , The motor control is often bulky, has limitations on fluid temperature, and is not suitabl...

AI Technical Summary

Problems solved by technology

The existing valves in China mainly include cut-off type, gate type, swing type, spherical type, butterfly type, sliding valve type, roof type and pipe clamp type in structure, and the above valves are more used in civil and industrial fields. , such as water valves, oil valves, low-temperature gas valves, etc., the pressure loss of the existing valves is large when the fluid flows through the control components, and the control is mostly controlled by manual switches or driven by motors. Manual control cannot meet the requirements of the engine. , the motor control is often bulky, there is a limit to the fluid temperature, and it is not suitable for the field of aero-engines

The existing valves on aero-engines are basically aimed at low-temperature fluids, and the controlled air flow is relatively small. At present, there are no relatively mature products for high-temperature fluid control valves.

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